User Manual CM-CAN1
5-11
5 Control and reference input
DE
EN
1
2
3
4
5
6
7
A
Note: In transmissions the number of data bytes does not neces-
sarily have to be taken into account, but it is advantageous.
5.5.2 Broadcast
transmissions
Broadcast transmissions are received and evaluated by all devices. The
’Remote Transmission Request’ flag must not be set for these transfers.
No reply is given to such transmissions.
Any one broadcast transmission can be sent only by one bus station.
5.5.3 Station logon
Function: System logon after power ON
Data direction: Drive unit -> Master
Type: Selective
This message is delivered only after power-on in the System Logon sys-
tem state cyclically every 100 ms.
After power-on each bus station attempts to log on to the master.
The drive unit transmits this identifier with a sampling time of 100 ms. The
master identifies from the identifiers which devices are connected to the
bus and which address is assigned to the devices concerned.
The identifier is transmitted until the drive unit has been addressed once
by the master over the bus (function: System Start).
If the master addressed the drive unit with identifier 221 System Start, the
drive unit detects that the master has received the logon, terminates the
transmission with the “logon identifier” and immediately begins cyclically
sending status messages from the device onto the bus.
The sampling time of 100 ms cannot be changed!
Priority based
on CAL
Base ID Data byte
7 1543 No data
To Next Page
Loading...